(19)

(11)

EP 1 581 891 A2

(12)

(88) Date of publication A3: 22.07.2004 (43) Date of publication: 05.10.2005 Bulletin 2005/40 (21) Application number: 03786632.4 (22) Date of filing: 07.11.2003

(51) International Patent Classification (IPC)7: G06F 17/30 (86) International application number: PCT/US2003/035791 (87) International publication number: WO 2004/046968 (03.06.2004 Gazette 2004/23)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 19.11.2002 US 300246 (71) Applicant: Hewlett-Packard Development Company, L.P. Houston, TX 77070 (US)	(72) Inventors: SHEN, Bo Mountain View, CA 94041 (US) LEE, Sung-Ju Los Altos, CA 94024 (US) (74) Representative: Schoppe, Fritz et al Patentanwälte Schoppe, Zimmermann, Stöckeler & Zinkler Postfach 246 82043 Pullach bei München 82043 Pullach bei München (DE)